Spring system.



W. H. SON. SPRING SYSTEM. APPLIUATION FILED im. 26, 1907,

Patented- Mar. 3, 1914 7 l il .9

wup-nenes INVENTOFI l www Sm.

WILLIAM H. SON, OF WILKES-BARRE, PENNSYLVANIA.

SPRING SYSTEM.

Specification of Letters Patent.

Patented Mar. 3,:1914.

Application filed March 26, 1907. Serial No. 364,678.

To all whom t may concern Be it known that I, VILLIAM I-l. SON, ofWilkeseBarre, Luzerne county, Pennsylvania, have invented'a new anduseful Spring System, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification, in which- Figure 1 is a side elevationshowing one form of a spring arrangement; Fig. 2 is a section on theline II-II of Fig. l; and Fig. 3 is a similar view showing amodification.

My invention has relation to a system of springs, and particularlyvehicle springs, such as those used onautomobiles, wagons, etc., theobject being to provide means for absorbing or cushioning the recoil ofthe .main spring or springs to thereby absorb or neutralize the jumpingor pounding of the y, ivel lconnected to the s vehicle body 1n passingover rough roads, etc.

-To this end, my invention consists in using a secondary or auxiliaryspring in connection with a main sp1-in and so arranged as to come intoaction upon the recoil of the main spring. v

y invention also consistsin the novel construction, arrangement andcombination of parts all substantially as hereinafter described andpointed out inthe appended claim. l

Referring to the accompanying drawings, Figs. land 2, the numeral2.designates a frame member, which, may be a portion of a vehicle frame.3 is a semi elliptical spring, which is secured to the support or axle 4by the'usuall clip 5and whose ends are connected to the frame member 2to sustain the load carried by said member. 6 designates an auxiliary or'secondary spring, which is connected at oneend tothe central portion ofthe spring 3, and at the opposite end to the frame member 2. This sprinconsists of .n intermediate coil 6', lfrom t `e, ends of vhich extendthe arms 6, which are respecpring 8 and frame mem er 2 by means ofsuitable pins or bolts 7. The upper arm of the secondary spring is4shown as being flattened to'form a slotted portion 11, which looselyengages the upper securing bolt L .The framework 2 is capable of aslight normal up and down movement without bringing the secondary springinto action. Upon any movement of the frame beyond these limits,however, the end wall of the slot will 'e'nffage with the bolt 7 andthereby bring tie secondary spring into play. The coils 6 of thissecondary spring are so wound that upward movement of the frame 2 willtend to close the coils, and therefore will bring their resistance intoaction to oppose such upward movement; while a downward movement of theframe memberl tends to open the coils sothat they offer comparativelylittle resistance to movement in this direction. I Vhen the vehiclewheels strike an irregularity or obstruction in the road, the recoil ot'the main spring 3, and the consequent upward throw of the frame member 2brings the coil 6. into action, and its resistance is opposed to suchupward movement, thereby bringing the frame mehr.4

ber gradually and easily back to its.norm:11`

position. This, not only avoids the disagreeable shocks to the occupantsof the vehicle, but it also avoids injury to the various parts of thevehicle due,to the shocks caused by violent recoils of the main springs.

In the form shown in Fig. 3, the secondary spring is shown as interp sedbetween the two halves of an elli tical sipring 8, to which its ends aresecured y the clip plates 9 and pivot 10 or other suitable joint.

-Tbe advantages of my invention result from the use of the secondaryspring a1-` ranged to oppose the upward movement of the main springafter it has beenmoved a predetermined distance, while offering littleor no resistance. This secondary spring affords simple and effectivemeans for the purpose, which can be readily applied to existing springsystems. The vehicle may be provided with any number of these secondarysprings, as may be found necessary, and their location, arrangement, andmanner of connection to the main springs and to the vehicle frame may bechanged in various ways, without departing from the spirit and scope ofmy invention, since The combination with an axle, a vehicle, and a mainspring supported upon the axle Lesen/es and Supporting' the vehcle,' ofa supple# In testimony whereof, have hereunto sel mental spll'mgcomprising dllvergng arms my hand.

connected a s rin coil W ose tension s Y' increased byy the epaaton ofthe arms, the WL'MAM H SON arms being connected respectively to the ve-YVtnesses:

hcle and the axle, one of the connections be- .E J. ROTH,

ing a sldable one, substantialy as descbeil?. NoLAN,

Gope ci thm patent may be obtained for ve Gems each, bjg/'adflressimfg yommsione ci Eemnes,

Wemnggen, IIJ. Gf'

www,

